A benyújtási határidő holnap lejár.

It is a noun phrase meaning submission deadline.

• határidő = deadline
• benyújtási = for submitting / submission-related

So benyújtási határidő literally means something like deadline of submission, but in natural English we say submission deadline.

Benyújtási comes from the verb benyújt = to submit.

The ending -ási / -ési turns a verb into a noun or adjective-like form referring to the action. In this sentence, it works like an attributive modifier:

• benyújt = submit
• benyújtás = submission
• benyújtási = submission-, for submitting

So benyújtási határidő is literally submission deadline or deadline for submitting.

A is the Hungarian definite article, meaning the.

So:

• A benyújtási határidő = the submission deadline

Hungarian has two forms of the definite article:

• a
• az

The choice depends on the following sound. Here it is a, because benyújtási starts with a consonant.

Yes, határidő is one word. It means deadline.

It is historically made up of:

• határ = border, limit
• idő = time

So the literal idea is something like time limit. In actual usage, though, it simply means deadline.

Lejár means expires, runs out, or comes to an end.

In this sentence, it is used for the deadline:

• A benyújtási határidő holnap lejár.
• The submission deadline expires tomorrow.

The verb lejár is very common for things like:

• deadlines
• documents
• permits
• subscriptions
• time periods

For example:

• Lejár a vízumom. = My visa expires.
• Lejár a bérletem. = My pass/subscription expires.

Hungarian often uses the present tense for future events when the time is already clear from the sentence.

Here, holnap = tomorrow, so the future meaning is obvious:

• holnap lejár = expires tomorrow

This is very natural in Hungarian. English can also do something similar in some contexts, but Hungarian uses it very regularly.

Because Hungarian word order is flexible, and elements are often placed according to emphasis or information structure rather than a fixed English-style pattern.

In A benyújtási határidő holnap lejár, the order is neutral and natural:

• topic: A benyújtási határidő
• time expression: holnap
• verb: lejár

It simply means:

• The submission deadline expires tomorrow.

You can also hear:

• Holnap lejár a benyújtási határidő.

That version puts more emphasis on tomorrow or presents it as the starting point of the sentence.

Yes, absolutely.

Both are natural:

• A benyújtási határidő holnap lejár.
• Holnap lejár a benyújtási határidő.

The difference is mainly in emphasis and flow:

• A benyújtási határidő holnap lejár = starts with the thing being talked about, the submission deadline
• Holnap lejár a benyújtási határidő = starts with tomorrow, giving the time more prominence

Yes. Lejár is third person singular.

The subject is A benyújtási határidő = the submission deadline, which is singular, so the verb is singular too.

So the structure is:

• A benyújtási határidő = subject
• lejár = expires

Hungarian verbs agree with the subject, so if the subject changed, the verb form would change too.

Because Hungarian does not need a future auxiliary here. The present tense plus a time word like holnap is enough.

English often says:

• will expire tomorrow

Hungarian very naturally says:

• holnap lejár

So the future sense comes from holnap, not from a separate word meaning will.

Not exactly. That would be a different meaning.

A benyújtási határidő holnap lejár means:

• The submission deadline expires tomorrow
• Tomorrow is the last day before it is no longer valid

If you want to say The submission deadline is tomorrow, Hungarian would more likely use something like:

• A benyújtási határidő holnap van.

So lejár specifically adds the idea of expiring / running out.

In Hungarian, the main stress is normally on the first syllable of each word.

So roughly:

• A
• BE-nyúj-tá-si
• HA-tár-i-dő
• HOL-nap
• LE-jár

A rough English-style approximation is:

• aw BEN-yooj-taa-shee HAW-taa-ri-doe HOL-nop LEH-yaar

A few notes:

• ny sounds like ny in canyon
• á is a long vowel
• ő is a long rounded vowel with no exact English equivalent

Yes, it sounds neutral to slightly formal, which makes sense because it talks about a deadline.

The phrase benyújtási határidő is common in official, academic, and administrative contexts, such as:

• applications
• forms
• assignments
• tenders
• documents

In everyday conversation, people might sometimes shorten it to just határidő if the context is already clear. For example:

• A határidő holnap lejár.
• The deadline expires tomorrow.